Summary: Which players have the most at stake in the preseason? And which position battles are we paying attention to? ... The Redskins, Lions, and Patriots backfields are intriguing. Stevan Ridley and Kevin Smith could be moving up the rankings ... What makes Jamaal Charles different than Adrian Peterson as we evaluate them in the preseason? ... Are we worried about Andre Johnson with this latest injury? ... Your emails at fantasyfootball@cbsinteractive.com
